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A153951 Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 6 ones in any 5 X 5 X 5 subtriangle. 0
1, 2, 4, 16, 48, 181, 930, 8275, 75027, 1115868, 15698357, 385413794, 9296853593, 385316885091, 15604629751554, 1064622004776402 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A034917 A215724 A003433 * A248748 A350646 A165905
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2009
STATUS
approved

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)